SWOLLEN-HEAD-SYNDROME ASSOCIATED WITH ESCHERICHIA-COLI AND INFECTIOUS-BRONCHITIS VIRUS IN THE CENTRAL VALLEY OF CALIFORNIA

Citation
R. Droual et Pr. Woolcock, SWOLLEN-HEAD-SYNDROME ASSOCIATED WITH ESCHERICHIA-COLI AND INFECTIOUS-BRONCHITIS VIRUS IN THE CENTRAL VALLEY OF CALIFORNIA, Avian pathology, 23(4), 1994, pp. 733-742
Citations number
22
Categorie Soggetti
Veterinary Sciences
Journal title
ISSN journal
03079457
Volume
23
Issue
4
Year of publication
1994
Pages
733 - 742
Database
ISI
SICI code
0307-9457(1994)23:4<733:SAWEAI>2.0.ZU;2-1
Abstract
A commercial broiler flock in the Central Valley of California experie nced a sudden increase in mortality due to heavy culling. Clinical sig ns included a snick, swollen heads and severe depression. Necropsy and histology revealed tracheitis, rhinitis, facial cellulitis, blepharit is, episcleritis, otitis media and caseous exudate within the air spac es of cranial bones. Escherichia coli serotype O78 was isolated from a ll lesions. Infectious bronchitis virus (Massachusetts serotype) was i solated from trachea/nasal cavity tissue pool. Adenovirus group 1 was isolated from trachea/nasal cavity and caecal tonsil tissue pools. Ser um samples were positive for infectious bronchitis using ELISA and hae magglutination inhibition tests, but negative for turkey rhinotracheit is by an ELISA using the British antigen. This case suggests that swol len head syndrome can be associated with viruses other than pneumoviru s.